HID: picolcd: fix deferred_io init/cleanup to fb ordering

Adjust ordering if framebuffer (un)registration and defio init/cleanup
to match the correct order (init defio, register FB ... unregister FB,
cleanup defio)

Acked-by: Jaya Kumar <jayakumar.lkml@gmail.com>
Signed-off-by: Bruno Prémont <bonbons@linux-vserver.org>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>